公开(公告)号：US11827995B2

公开(公告)日：2023-11-28

申请号：US17802938

申请日：2021-08-23

Applicant: SOOCHOW UNIVERSITY

Inventor： Huihua Wang ,  Yingjun Xu ,  Shizhan Sheng ,  Deyong Wang ,  Tianpeng Qu ,  Jun Tian ,  Dong Hou ,  Xianglong Li ,  Shaoyan Hu

IPC: C25D3/12 ,  C25D3/56 ,  C25D5/50 ,  C25D7/06 ,  C25D17/10

CPC classification number: C25D3/12 ,  C25D3/56 ,  C25D5/50 ,  C25D7/0614 ,  C25D17/10

Abstract: The present invention provides an in-situ method for synthesizing a Ni—W—WC composite coating, which includes the following steps: immersing a carbon steel substrate to be coated in an electroplating solution and electroplating, to obtain a Ni—W—C alloy coating on the surface of the carbon steel substrate; and then subjecting the alloy coating to high temperature heat treatment to obtain the Ni—W—WC composite coating. The electroplating solution comprises the following components: a nickel salt, a tungstate, citric acid, a citrate, a recarburizer, and a wetting agent. The present invention shows merits of simple operation, high current efficiency, simple electroplating process, and is clean and causes no pollution, thus meeting the requirements of environment protection.

公开(公告)号：US11667982B2

公开(公告)日：2023-06-06

申请号：US17476501

申请日：2021-09-16

Applicant: University of Science and Technology Beijing ,  Soochow University

Inventor： Rong Zhu ,  Shaoyan Hu ,  Kai Dong ,  Rongfang Su ,  Weifeng Li

IPC: C21C5/46 ,  C21C5/48 ,  F27D3/16 ,  C21C5/30

CPC classification number: C21C5/4606 ,  C21C5/30 ,  C21C5/48 ,  F27D3/16 ,  F27D2003/164 ,  F27D2003/168

Abstract: A long-life service method for powder-bottom-injecting converter based on collaborative hot replacement of furnace bottom and bottom purging brick belongs to the field of steelmaking technologies using powder-bottom-injecting converters. According to equipment characteristics, process characteristics, and erosion characteristics of the powder-bottom-injecting converter, the design, arrangement, installation, use, maintenance, and replacement of the bottom purging/powder injection bricks are systematically optimized and improved, a technology of automatically detecting the erosion height of bottom purging bricks is adopted, and hot replacement of bottom purging/powder injection bricks and hot replacement of the converter furnace bottom are used collaboratively, which not only can prolong the service life of a single bottom purging/powder injection brick, but also can greatly prolong the overall life of the powder-bottom-injecting converter from 1000-3000 heats in the prior art to 6000-10000 heats. Hence, the life of the powder-bottom-injecting converter is as long as that of a conventional converter.